Oasis Arched Door

Taken all the way down to base materials, one Oasis Arched Door is 3 crafting steps deep and needs 3 intermediates — Steel Ingot ×8, Steel Hinge ×4 and Walnut Lumber ×2 — which resolve to 4 distinct raw materials totalling 32 units, plus 33 crystals.

That bill outweighs 10,750 of the 13,602 recipes tracked here and 1,133 of the 1,441 Armorer ones, and 337 recipes nest deeper.

Only 5 of those crystals go into the final step; the other 28 are burned by the intermediates, so the real crystal cost is 16 Fire Shard, 11 Ice Shard, 4 Wind Shard and 1 other kind.

The chain crosses three disciplines — Armorer to Lv 29, Blacksmith to Lv 26 and Carpenter to Lv 25 — so no single class can finish it unaided.

All 4 raw materials are gathered, and not one of their spots is timed, so nothing in the tree waits on the Eorzean clock.

Of the intermediates, Walnut Lumber has the widest use: 128 recipes call for it, spanning eight of the eight crafting classes.